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专家点评:演讲者围绕环境污染的严重性作了一次次的说明。文章的结构严谨，也很有层次感。
Honorable judges, ladies and gentlemen. Today，we are gathering here to discuss a very hot issue. how to find harmony in a new age between man and nature? Where modern science and technology are concerned I am only a layman I have to say. However, living in this "new age"
Honorable judges, ladies and gentlemen. Today，we are gathering here to discuss a very hot issue. how to find harmony in a new age between man and nature? Where modern science and technology are concerned I am only a layman I have to say. However, living in this "new age"
